def __init__(self, size, colour=None, line_width=None, position=None):
"""Create a rectangle.
Parameters
----------
size : (int, int)
size (width, height) of the rectangle
line_width : int, optional
line width in pixels; 0 will result in a filled rectangle,
as does a value < 0 or >= min(size)
position : (int, int), optional
position of the stimulus
colour : (int, int, int), optional
colour of the rectangle
"""
if position is None:
position = defaults.rectangle_position
Visual.__init__(self, position=position)
self._size = size
if colour is None:
colour = defaults.rectangle_colour
if colour is not None:
self._colour = colour
else:
self._colour = expyriment._active_exp.foreground_colour
if line_width is None:
line_width = defaults.rectangle_line_width
elif line_width < 0 or line_width >= min(self._size):
line_width = 0
self._line_width = line_width
def __init__(self, size, colour=None, line_width=None, position=None):
"""Create an ellipse.
Parameters
----------
size : (int, int)
size of the ellipse (major and minor axis)
colour : (int, int, int), optional
colour of the ellipse
line_width : int, optional
line width in pixels; 0 will result in a filled ellipse
(as does a value < 0 or >= min(size))
position : (int, int), optional
position of the stimulus
"""
if position is None:
position = defaults.circle_position
Visual.__init__(self, position)
self._size = size
if colour is None:
colour = defaults.circle_colour
if colour is not None:
self._colour = colour
else:
self._colour = expyriment._active_exp.foreground_colour
if line_width is None:
line_width = defaults.circle_line_width
elif line_width < 0 or line_width >= min(self._size):
line_width = 0
self._line_width = line_width
def __init__(self, size, colour=None, line_width=None, position=None):
"""Create a rectangle.
Parameters
----------
size : (int, int)
size (width, height) of the rectangle
line_width : int, optional
line width in pixels; 0 will result in a filled rectangle,
as does a value < 0 or >= min(size)
position : (int, int), optional
position of the stimulus
colour : (int, int, int), optional
colour of the rectangle
"""
if position is None:
position = defaults.rectangle_position
Visual.__init__(self, position=position)
self._size = size
if colour is None:
colour = defaults.rectangle_colour
if colour is not None:
self._colour = colour
else:
self._colour = expyriment._active_exp.foreground_colour
if line_width is None:
line_width = defaults.rectangle_line_width
elif line_width < 0 or line_width >= min(self._size):
line_width = 0
self._line_width = line_width
def __init__(self, filename, position=None):
"""Create a picture.
Parameters
----------
filename : str
filename (incl. path) of the picture file
position :(int,int), optional
position of the stimulus
"""
if position is None:
position = defaults.picture_position
Visual.__init__(self, position, log_comment=filename)
self._filename = filename
if not(os.path.isfile(self._filename)):
if isinstance(self._filename, unicode):
import sys
ENCODING = sys.getfilesystemencoding()
if ENCODING is None:
ENCODING = u"utf-8"
filename = self._filename.encode(ENCODING)
raise IOError("The picture file '{0}' does not exist".format(
filename))
def __init__(self,
size,
colour=None,
line_width=None,
corner_rounding=None,
corner_anti_aliasing=None,
position=None):
"""Create a rectangle.
Parameters
----------
size : (int, int)
size (width, height) of the rectangle
colour : (int, int, int), optional
colour of the rectangle
line_width : int, optional
line width in pixels; 0 will result in a filled rectangle,
as does a value < 0 or >= min(size)
corner_rounding : float or (float, float, float, float), optional
radius of the corners in percent of 0.5 * min(size);
corner_anti_aliasing : int, optional
anti aliasing parameter for rounded corners
(good anti_aliasing with 10)
position : (int, int), optional
position of the stimulus
"""
if position is None:
position = defaults.rectangle_position
Visual.__init__(self, position=position)
self._size = size
if colour is None:
colour = defaults.rectangle_colour
if colour is not None:
self._colour = colour
else:
self._colour = expyriment._active_exp.foreground_colour
if line_width is None:
line_width = defaults.rectangle_line_width
elif line_width < 0 or line_width >= min(self._size):
line_width = 0
self._line_width = line_width
if corner_rounding is None:
corner_rounding = defaults.rectangle_corner_rounding
elif corner_rounding < 0 or corner_rounding > 100:
raise AttributeError("corner_rounding must be >= 0 and < 100!")
self._corner_rounding = corner_rounding
if corner_anti_aliasing is not None:
self._corner_anti_aliasing = corner_anti_aliasing
else:
self._corner_anti_aliasing = defaults.rectangle_corner_anti_aliasing
def __init__(self, size, colour=None, line_width=None,
corner_rounding=None, corner_anti_aliasing=None,
position=None):
"""Create a rectangle.
Parameters
----------
size : (int, int)
size (width, height) of the rectangle
colour : (int, int, int), optional
colour of the rectangle
line_width : int, optional
line width in pixels; 0 will result in a filled rectangle,
as does a value < 0 or >= min(size)
corner_rounding : float or (float, float, float, float), optional
radius of the corners in percent of 0.5 * min(size);
corner_anti_aliasing : int, optional
anti aliasing parameter for rounded corners
(good anti_aliasing with 10)
position : (int, int), optional
position of the stimulus
"""
if position is None:
position = defaults.rectangle_position
Visual.__init__(self, position=position)
self._size = size
if colour is None:
colour = defaults.rectangle_colour
if colour is not None:
self._colour = colour
else:
self._colour = expyriment._active_exp.foreground_colour
if line_width is None:
line_width = defaults.rectangle_line_width
elif line_width < 0 or line_width >= min(self._size):
line_width = 0
self._line_width = line_width
if corner_rounding is None:
corner_rounding = defaults.rectangle_corner_rounding
elif corner_rounding < 0 or corner_rounding > 100:
raise AttributeError("corner_rounding must be >= 0 and < 100!")
else:
self._corner_rounding = corner_rounding
if corner_anti_aliasing is not None:
self._corner_anti_aliasing = corner_anti_aliasing
else:
self._corner_anti_aliasing = defaults.rectangle_corner_anti_aliasing
def __init__(self, position=None, colour=None, line_width=None,
anti_aliasing=None):
"""Create a shape.
A shape comprises always (0,0) as origin vertex
Parameters
----------
position : (int, int), optional
position of the stimulus
colour : (int, int, int), optional
colour of the shape
line_width : int, optional
line width in pixels; 0 will result in a filled shape,
as does a value < 0 or >= min(size) (optional)
anti_aliasing : int, optional
anti aliasing parameter (good anti_aliasing with 10)
"""
if position is None:
position = defaults.shape_position
Visual.__init__(self, position)
if colour is None:
colour = defaults.shape_colour
if colour is not None:
self._colour = colour
else:
self._colour = expyriment._active_exp.foreground_colour
if line_width is not None:
self._line_width = line_width
else:
self._line_width = defaults.shape_line_width
if anti_aliasing is not None:
self._anti_aliasing = anti_aliasing
else:
self._anti_aliasing = defaults.shape_anti_aliasing
self._vertices = []
self._xy_points = []
self._rect = []
self._native_rotation = 0
self._native_scaling = [1, 1]
self._native_rotation_centre = (0, 0)
self._rotation_centre_display_colour = None
self._update_points()
def __init__(self,
radii,
colour=None,
line_width=None,
position=None,
anti_aliasing=None):
"""Create an ellipse.
Parameters
----------
radii : (int, int)
major and minor radii of the ellipse
colour : (int, int, int), optional
colour of the ellipse
line_width : int, optional
line width in pixels; 0 will result in a filled ellipse
(as does a value < 0 or >= min(size))
position : (int, int), optional
position of the stimulus
anti_aliasing : int, optional
anti aliasing parameter (good anti_aliasing with 10)
"""
if position is None:
position = defaults.ellipse_position
Visual.__init__(self, position)
self._radii = radii
self._size = [x * 2 for x in radii]
if colour is None:
colour = defaults.ellipse_colour
if colour is not None:
self._colour = colour
else:
self._colour = expyriment._active_exp.foreground_colour
if line_width is None:
line_width = defaults.ellipse_line_width
elif line_width < 0 or line_width >= min(self._size):
line_width = 0
self._line_width = line_width
if anti_aliasing is not None:
self._anti_aliasing = anti_aliasing
else:
self._anti_aliasing = defaults.ellipse_anti_aliasing
def __init__(self, filename, position=None):
"""Create a picture.
Parameters
----------
filename : str
filename (incl. path) of the picture file
position :(int,int), optional
position of the stimulus
"""
if position is None:
position = defaults.picture_position
Visual.__init__(self, position, log_comment=filename)
self._filename = filename
if not (os.path.isfile(self._filename)):
raise IOError("The picture file '{0}' does not exist".format(
unicode2str(filename)))
def __init__(self, filename, position=None):
"""Create a picture.
Parameters
----------
filename : str
filename (incl. path) of the picture file
position :(int,int), optional
position of the stimulus
"""
if position is None:
position = defaults.picture_position
Visual.__init__(self, position, log_comment=filename)
self._filename = filename
if not(os.path.isfile(self._filename)):
raise IOError("The picture file '{0}' does not exist".format(
unicode2str(filename)))
def __init__(self,
start_point,
end_point,
line_width,
colour=None,
anti_aliasing=None):
"""Create a line between two points.
Parameters
----------
start_point : (int, int)
start point of the line (x,y)
end_point : (int, int)
end point of the line (x,y)
line_width : int
width of the plotted line
colour : (int, int, int), optional
line colour (int, int, int)
anti_aliasing : int, optional
anti aliasing parameter (good anti_aliasing with 10)
"""
self._start_point = list(start_point)
self._end_point = list(end_point)
self._line_width = line_width
Visual.__init__(self, position=[0, 0]),
if colour is None:
colour = defaults.line_colour
if colour is None:
colour = expyriment._active_exp.foreground_colour
self._colour = colour
if anti_aliasing is not None:
self._anti_aliasing = anti_aliasing
else:
self._anti_aliasing = defaults.line_anti_aliasing
s = misc.geometry.XYPoint(start_point)
e = misc.geometry.XYPoint(end_point)
d = misc.geometry.XYPoint(e.x - s.x, e.y - s.y)
self._position[0] = s.x + (d.x / 2)
self._position[1] = s.y + (d.y / 2)
def __init__(self, radii, colour=None, line_width=None, position=None,
anti_aliasing=None):
"""Create an ellipse.
Parameters
----------
radii : (int, int)
major and minor radii of the ellipse
colour : (int, int, int), optional
colour of the ellipse
line_width : int, optional
line width in pixels; 0 will result in a filled ellipse
(as does a value < 0 or >= min(size))
position : (int, int), optional
position of the stimulus
anti_aliasing : int, optional
anti aliasing parameter (good anti_aliasing with 10)
"""
if position is None:
position = defaults.ellipse_position
Visual.__init__(self, position)
self._radii = radii
self._size = [x * 2 for x in radii]
if colour is None:
colour = defaults.ellipse_colour
if colour is not None:
self._colour = colour
else:
self._colour = expyriment._active_exp.foreground_colour
if line_width is None:
line_width = defaults.ellipse_line_width
elif line_width < 0 or line_width >= min(self._size):
line_width = 0
self._line_width = line_width
if anti_aliasing is not None:
self._anti_aliasing = anti_aliasing
else:
self._anti_aliasing = defaults.ellipse_anti_aliasing
def __init__(self, size, position=None, colour=None):
"""Create a canvas.
Parameters
----------
size : (int, int)
size of the canvas (int,int)
position : (int, int), optional
position of the stimulus
colour : (int,int,int), optional
colour of the canvas stimulus
"""
if position is None:
position = defaults.canvas_position
Visual.__init__(self, position)
self._size = size
if colour is not None:
self._colour = colour
else:
self._colour = defaults.canvas_colour
def __init__(self, size, position=None, colour=None):
"""Create a canvas.
Parameters
----------
size : (int, int)
size of the canvas (int,int)
position : (int, int), optional
position of the stimulus
colour : (int,int,int), optional
colour of the canvas stimulus
"""
if position is None:
position = defaults.canvas_position
Visual.__init__(self, position)
self._size = size
if colour is not None:
self._colour = colour
else:
self._colour = defaults.canvas_colour
def __init__(self, start_point, end_point, line_width, colour=None,
anti_aliasing=None):
"""Create a line between two points.
Parameters
----------
start_point : (int, int)
start point of the line (x,y)
end_point : (int, int)
end point of the line (x,y)
line_width : int
width of the plotted line
colour : (int, int, int), optional
line colour (int, int, int)
anti_aliasing : int, optional
anti aliasing parameter (good anti_aliasing with 10)
"""
self._start_point = list(start_point)
self._end_point = list(end_point)
self._line_width = line_width
Visual.__init__(self, position=[0,0]),
if colour is None:
colour = defaults.line_colour
if colour is None:
colour = expyriment._active_exp.foreground_colour
self._colour = colour
if anti_aliasing is not None:
self._anti_aliasing = anti_aliasing
else:
self._anti_aliasing = defaults.line_anti_aliasing
s = misc.geometry.XYPoint(start_point)
e = misc.geometry.XYPoint(end_point)
d = misc.geometry.XYPoint(e.x - s.x, e.y - s.y)
self._position[0] = s.x + (d.x / 2)
self._position[1] = s.y + (d.y / 2)
def __init__(self, position=None, colour=None, line_width=None,
anti_aliasing=None):
"""Create a shape.
A shape is an object described by vertices. For more details about
vertex representations see:
http://en.wikipedia.org/wiki/Vertex_(geometry)
The vertex representation describes the contour of an object. Think of
it as if you would draw with a pen. You start somewhere and make
movements in different directions. A rectangle could be then for
instance described by a right, a down, a left and an up movement
(see example below).
As always in Expyriment, the center of the surface of the shape is its
position. That means, that with every new vertex, the shape size might
change and the shape position will be realigned.
Example
-------
r = stimuli.Shape(line_width = 0)
r.add_vertex((100,0))
r.add_vertices([(0,-50),(-100,0) ])
# three vertices are sufficient, because shapes are always closed
r.present()
Parameters
----------
position : (int, int), optional
position of the stimulus
colour : (int, int, int), optional
colour of the shape
line_width : int, optional
line width in pixels; 0 will result in a filled shape,
as does a value < 0 or >= min(size) (optional)
anti_aliasing : int, optional
anti aliasing parameter (good anti_aliasing with 10)
"""
if position is None:
position = defaults.shape_position
Visual.__init__(self, position)
if colour is None:
colour = defaults.shape_colour
if colour is not None:
self._colour = colour
else:
self._colour = expyriment._active_exp.foreground_colour
if line_width is not None:
self._line_width = line_width
else:
self._line_width = defaults.shape_line_width
if anti_aliasing is not None:
self._anti_aliasing = anti_aliasing
else:
self._anti_aliasing = defaults.shape_anti_aliasing
self._vertices = []
self._xy_points = []
self._rect = []
self._native_rotation = 0
self._native_scaling = [1, 1]
self._native_rotation_centre = (0, 0)
self._rotation_centre_display_colour = None
self._update_points()
def __init__(self, text, size, position=None, text_font=None,
text_size=None, text_bold=None, text_italic=None,
text_underline=None, text_justification=None,
text_colour=None, background_colour=None,
do_not_trim_words=None):
"""Create a text box.
Notes
-----
text_font can be both, a name or path to a font file!
When text_font is a name, Expyriment will try to find a font that
best matches the given name.
If no matching font can be found, or if the given font file cannot be
found, the Pygame system default will be used.
In any case the value of the attribute text_font will always
resemble the font that is actually in use!
Parameters
----------
text : str
text to wrap
size : (int, int)
size of the text box
position : (int, int), optional
position of the stimulus
text_font : str, optional
text font to use as a name or as a path to a font file
text_size : int, optional
size of the text
text_bold : bool, optional
font should be bold
text_italic : bool, optional
font should be italic
text_underline : bool, optional
font should get an underline
text_justification : int, optional
text justification, 0 (left), 1 (center), 2 (right)
text_colour : (int, int, int), optional
colour of the text
background_colour : (int, int, int), optional
background colour
do_not_trim_words: bool, optional
if True, words that exceed the width of the text box
will be not be trimmed and an exception is raise instead.
default: False
"""
pygame.font.init()
if position is None:
position = defaults.textbox_position
Visual.__init__(self, position)
self._text = text
self._size = size
if text_size is None:
text_size = defaults.textbox_text_size
if text_size is not None:
self._text_size = text_size
else:
self._text_size = expyriment._active_exp.text_size
if text_font is None:
text_font = defaults.textbox_text_font
if text_font is not None:
self._text_font = find_font(text_font)
else:
self._text_font = find_font(expyriment._active_exp.text_font)
try:
_font = pygame.font.Font(unicode2str(self._text_font, fse=True),
10)
_font = None
except:
raise IOError("Font '{0}' not found!".format(text_font))
if text_bold is not None:
self._text_bold = text_bold
else:
self._text_bold = defaults.textbox_text_bold
if text_italic is not None:
self._text_italic = text_italic
else:
self._text_italic = defaults.textbox_text_italic
if text_underline is not None:
self._text_underline = text_underline
else:
self._text_underline = defaults.textbox_text_underline
if text_justification is not None:
self._text_justification = text_justification
else:
self._text_justification = defaults.textbox_text_justification
if text_colour is not None:
self._text_colour = text_colour
else:
if defaults.textbox_text_colour is not None:
self._text_colour = defaults.textbox_text_colour
else:
self._text_colour = expyriment._active_exp.foreground_colour
if background_colour is not None:
self._background_colour = background_colour
else:
self._background_colour = \
defaults.textbox_background_colour
if do_not_trim_words is not None:
self._do_not_trim_words = do_not_trim_words
else:
self._do_not_trim_words = defaults.textbox_do_not_trim_words
def __init__(self,
position=None,
colour=None,
line_width=None,
anti_aliasing=None):
"""Create a shape.
A shape is an object described by vertices. For more details about
vertex representations see:
http://en.wikipedia.org/wiki/Vertex_(geometry)
The vertex representation describes the contour of an object. Think of
it as if you would draw with a pen. You start somewhere and make
movements in different directions. A rectangle could be then for
instance described by a right, a down, a left and an up movement
(see example below).
As always in Expyriment, the center of the surface of the shape is its
position. That means, that with every new vertex, the shape size might
change and the shape position will be realigned.
Example
-------
r = stimuli.Shape(line_width = 0)
r.add_vertex((100,0))
r.add_vertices([(0,-50),(-100,0) ])
# three vertices are sufficient, because shapes are always closed
r.present()
Parameters
----------
position : (int, int), optional
position of the stimulus
colour : (int, int, int), optional
colour of the shape
line_width : int, optional
line width in pixels; 0 will result in a filled shape,
as does a value < 0 or >= min(size) (optional)
anti_aliasing : int, optional
anti aliasing parameter (good anti_aliasing with 10)
"""
if position is None:
position = defaults.shape_position
Visual.__init__(self, position)
if colour is None:
colour = defaults.shape_colour
if colour is not None:
self._colour = colour
else:
self._colour = expyriment._active_exp.foreground_colour
if line_width is not None:
self._line_width = line_width
else:
self._line_width = defaults.shape_line_width
if anti_aliasing is not None:
self._anti_aliasing = anti_aliasing
else:
self._anti_aliasing = defaults.shape_anti_aliasing
self._vertices = []
self._xy_points = []
self._rect = []
self._native_rotation = 0
self._native_scaling = [1, 1]
self._native_rotation_centre = (0, 0)
self._rotation_centre_display_colour = None
self._update_points()
def __init__(self, text, size, position=None, text_font=None,
text_size=None, text_bold=None, text_italic=None,
text_underline=None, text_justification=None,
text_colour=None, background_colour=None):
"""Create a text box.
Notes
-----
text_font can be both, a name or path to a font file!
When text_font is a name, Expyriment will try to find a font that
best matches the given name.
If no matching font can be found, or if the given font file cannot be
found, the Pygame system default will be used.
In any case the value of the attribute text_font will always
resemble the font that is actually in use!
Parameters
----------
text : str
text to wrap
size : (int, int)
size of the text box
position : (int, int), optional
position of the stimulus
text_font : str, optional
text font to use as a name or as a path to a font file
text_size : int, optional
size of the text
text_bold : bool, optional
font should be bold
text_italic : bool, optional
font should be italic
text_underline : bool, optional
font should get an underline
text_justification : int, optional
text justification, 0 (left), 1 (center), 2 (right)
text_colour : (int, int, int), optional
colour of the text
background_colour : (int, int, int), optional
background colour
"""
pygame.font.init()
if position is None:
position = defaults.textbox_position
Visual.__init__(self, position)
self._text = text
self._size = size
if text_size is None:
text_size = defaults.textbox_text_size
if text_size is not None:
self._text_size = text_size
else:
self._text_size = expyriment._active_exp.text_size
if text_font is None:
text_font = defaults.textbox_text_font
if text_font is not None:
self._text_font = find_font(text_font)
else:
self._text_font = find_font(expyriment._active_exp.text_font)
try:
_font = pygame.font.Font(unicode2str(self._text_font, fse=True),
10)
_font = None
except:
raise IOError("Font '{0}' not found!".format(text_font))
if text_bold is not None:
self._text_bold = text_bold
else:
self._text_bold = defaults.textbox_text_bold
if text_italic is not None:
self._text_italic = text_italic
else:
self._text_italic = defaults.textbox_text_italic
if text_underline is not None:
self._text_underline = text_underline
else:
self._text_underline = defaults.textbox_text_underline
if text_justification is not None:
self._text_justification = text_justification
else:
self._text_justification = defaults.textbox_text_justification
if text_colour is not None:
self._text_colour = text_colour
else:
if defaults.textbox_text_colour is not None:
self._text_colour = defaults.textbox_text_colour
else:
self._text_colour = expyriment._active_exp.foreground_colour
if background_colour is not None:
self._background_colour = background_colour
else:
self._background_colour = \
defaults.textbox_background_colour
def __init__(self, text, position=None, text_font=None, text_size=None,
text_bold=None, text_italic=None, text_underline=None,
text_colour=None, background_colour=None, max_width=None):
"""Create a text line stimulus.
NOTE: text_font can be both, a name or path to a font file!
When text_font is a name, Expyriment will try to find a font that
best matches the given name.
If no matching font can be found, or if the given font file cannot be
found, the Pygame system default will be used.
In any case the value of the attribute text_font will always
resemble the font that is actually in use!
Parameters
----------
text : str
text to show (str)
position : (int, int), optional
position of the stimulus
text_font : str, optional
font to use as name or as path to a font file
text_size : int, optional
text size
text_bold : bool, optional
font should be bold
text_italic : bool, optional
font should be italic
text_underline : bool, optional
font should get an underline
text_colour : (int, int, int), optional
text colour
background_colour : (int, int, int), optional
background colour
max_width: int, optional
maximum surface width of the text line stimulus
if this parameter is defined, text lines that exceed this
surface width will be trimmed (indicated by a '~' as last letter)
"""
pygame.font.init()
if position is None:
position = defaults.textline_position
Visual.__init__(self, position, log_comment=text)
self._text = text
self._max_width = max_width
if text_size is None:
text_size = defaults.textline_text_size
if text_size is not None:
self._text_size = text_size
else:
self._text_size = expyriment._active_exp.text_size
if text_font is None:
text_font = defaults.textline_text_font
if text_font is not None:
self._text_font = find_font(text_font)
else:
self._text_font = find_font(expyriment._active_exp.text_font)
try:
_font = pygame.font.Font(unicode2str(self._text_font, fse=True),
10)
_font = None
except:
raise IOError("Font '{0}' not found!".format(text_font))
if text_bold is not None:
self._text_bold = text_bold
else:
self._text_bold = defaults.textline_text_bold
if text_italic is not None:
self._text_italic = text_italic
else:
self._text_italic = defaults.textline_text_italic
if text_underline is not None:
self._text_underline = text_underline
else:
self._text_underline = defaults.textline_text_underline
if text_colour is None:
text_colour = defaults.textline_text_colour
if text_colour is not None:
self._text_colour = text_colour
else:
self._text_colour = expyriment._active_exp.foreground_colour
if background_colour is not None:
self._background_colour = background_colour
else:
self._background_colour = \
defaults.textline_background_colour
def __init__(self, heading, text, position=None, heading_font=None,
heading_size=None, heading_bold=None, heading_italic=None,
heading_underline=None, heading_colour=None, text_font=None,
text_size=None, text_bold=None, text_italic=None,
text_underline=None, text_colour=None,
text_justification=None, background_colour=None, size=None):
"""Create a text screen.
Parameters
----------
heading : str
heading of the text screen
text : str
text of the text screen
position : (int, int), optional
position of the stimulus
heading_font : str, optional
heading font to use
heading_size : int, optional
heading font size
heading_bold : bool, optional
heading should be bold
heading_italic : bool, optional
heading should be italic
heading_underline : bool, optional
heading should get an underline
heading_colour : (int,int,int), optional
heding colour
text_font : str, optional
text font to use
text_size : int, optional
text font size
text_bold : bool, optional
text should be bold
text_italic : bool, optional
text should be italic
text_underline : bool, optional
text should get an underline
text_colour : (int,int,int), optional
text colour
text_justification : int, optional
0 (Left), 1(center), 2(right) (int) (optional)
background_colour : (int, int, int), optional
background_colour
size : (int, int), optional
size of the text screen
"""
if position is None:
position = defaults.textscreen_position
Visual.__init__(self, position, log_comment="text_screen")
self._heading = heading
self._text = text
if heading_font is None:
heading_font = defaults.textscreen_heading_font
if heading_font is not None:
self._heading_font = find_font(heading_font)
else:
self._heading_font = find_font(expyriment._active_exp.text_font)
try:
_font = pygame.font.Font(
unicode2str(self._heading_font, fse=True), 10)
_font = None
except:
raise IOError("Font '{0}' not found!".format(heading_font))
if heading_size is None:
heading_size = defaults.textscreen_heading_size
if heading_size:
self._heading_size = heading_size
else:
self._heading_size = int(expyriment._active_exp.text_size
* 1.2)
if heading_bold is not None:
self._heading_bold = heading_bold
else:
self._heading_bold = defaults.textscreen_heading_bold
if heading_italic is not None:
self._heading_italic = heading_italic
else:
self._heading_italic = \
defaults.textscreen_heading_italic
if heading_underline is not None:
self._heading_underline = heading_underline
else:
self._heading_underline = \
defaults.textscreen_heading_underline
if heading_colour is None:
heading_colour = defaults.textscreen_heading_colour
if heading_colour is not None:
self._heading_colour = heading_colour
else:
self._heading_colour = expyriment._active_exp.foreground_colour
if text_font is None:
text_font = defaults.textscreen_text_font
if text_font is not None:
self._text_font = find_font(text_font)
else:
self._text_font = find_font(expyriment._active_exp.text_font)
try:
_font = pygame.font.Font(unicode2str(self._text_font, fse=True),
10)
_font = None
except:
raise IOError("Font '{0}' not found!".format(text_font))
if text_size is None:
self._text_size = defaults.textscreen_text_size
if text_size is not None:
self._text_size = text_size
else:
self._text_size = expyriment._active_exp.text_size
if text_bold is not None:
self._text_bold = text_bold
else:
self._text_bold = defaults.textscreen_text_bold
if text_italic is not None:
self._text_italic = text_italic
else:
self._text_italic = defaults.textscreen_text_italic
if text_underline is not None:
self._text_underline = text_underline
else:
self._text_underline = defaults.textscreen_text_underline
if text_colour is None:
text_colour = defaults.textscreen_text_colour
if text_colour is not None:
self._text_colour = text_colour
else:
self._text_colour = expyriment._active_exp.foreground_colour
if text_justification is not None:
self._text_justification = text_justification
else:
self._text_justification = \
defaults.textscreen_text_justification
if size is not None:
self._size = size
else:
size = defaults.textscreen_size
if size is None:
try:
self._size = (
expyriment._active_exp.screen.surface.get_size()[0] -
expyriment._active_exp.screen.surface.get_size()[0]
/ 5,
expyriment._active_exp.screen.surface.get_size()[1] -
expyriment._active_exp.screen.surface.get_size()[1]
/ 5)
except:
raise RuntimeError("Cannot get size of screen!")
if background_colour is not None:
self._background_colour = background_colour
else:
self._background_colour = \
defaults.textscreen_background_colour
def __init__(self,
text,
position=None,
text_font=None,
text_size=None,
text_bold=None,
text_italic=None,
text_underline=None,
text_colour=None,
background_colour=None,
max_width=None):
"""Create a text line stimulus.
NOTE: text_font can be both, a name or path to a font file!
When text_font is a name, Expyriment will try to find a font that
best matches the given name.
If no matching font can be found, or if the given font file cannot be
found, the Pygame system default will be used.
In any case the value of the attribute text_font will always
resemble the font that is actually in use!
Parameters
----------
text : str
text to show (str)
position : (int, int), optional
position of the stimulus
text_font : str, optional
font to use as name or as path to a font file
text_size : int, optional
text size
text_bold : bool, optional
font should be bold
text_italic : bool, optional
font should be italic
text_underline : bool, optional
font should get an underline
text_colour : (int, int, int), optional
text colour
background_colour : (int, int, int), optional
background colour
max_width: int, optional
maximum surface width of the text line stimulus
if this parameter is defined, text lines that exceed this
surface width will be trimmed (indicated by a '~' as last letter)
"""
pygame.font.init()
if position is None:
position = defaults.textline_position
Visual.__init__(self, position, log_comment=text)
self._text = text
self._max_width = max_width
if text_size is None:
text_size = defaults.textline_text_size
if text_size is not None:
self._text_size = text_size
else:
self._text_size = expyriment._active_exp.text_size
if text_font is None:
text_font = defaults.textline_text_font
if text_font is not None:
self._text_font = find_font(text_font)
else:
self._text_font = find_font(expyriment._active_exp.text_font)
try:
_font = pygame.font.Font(unicode2str(self._text_font, fse=True),
10)
_font = None
except:
raise IOError("Font '{0}' not found!".format(text_font))
if text_bold is not None:
self._text_bold = text_bold
else:
self._text_bold = defaults.textline_text_bold
if text_italic is not None:
self._text_italic = text_italic
else:
self._text_italic = defaults.textline_text_italic
if text_underline is not None:
self._text_underline = text_underline
else:
self._text_underline = defaults.textline_text_underline
if text_colour is None:
text_colour = defaults.textline_text_colour
if text_colour is not None:
self._text_colour = text_colour
else:
self._text_colour = expyriment._active_exp.foreground_colour
if background_colour is not None:
self._background_colour = background_colour
else:
self._background_colour = \
defaults.textline_background_colour
